Скачать или смотреть How Should We Terminate Browser Driver Executable File In Selenium WebDriver

Please have a look a code :

import java.io.IOException;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.os.WindowsUtils;

public class Kill_Chrome {
public static void main(String[] args) throws IOException {
System.setProperty("webdriver.chrome.driver", System.getProperty("user.dir")
"/src/test/java/Report/BrowserDrivers/chrome_win_32/chromedriver_2.38.exe");
WebDriver driver = new ChromeDriver();

driver.manage().window().maximize();

driver.get("http://www.google.com");

// Killing file
Runtime.getRuntime().exec("taskkill /F /IM chromedriver_2.38.exe");
Runtime.getRuntime().exec("taskkill /F /IM chrome.exe");

//only for Windows machine
WindowsUtils.killByName("chromedriver.exe");
// driver.quit();

}

}